SAB82525HV22XP Infineon Technologies, SAB82525HV22XP Datasheet - Page 38
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SAB82525HV22XP
Manufacturer Part Number
SAB82525HV22XP
Description
Manufacturer
Infineon Technologies
Datasheet
1.SAB82525HV22XP.pdf
(126 pages)
Specifications of SAB82525HV22XP
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.75V
Operating Supply Voltage (max)
5.25V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
44
Lead Free Status / RoHS Status
Compliant
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4.2 Data Transfer Modes
Data transfer between the system memory and the HSCX for both transmit and receive
direction is controlled by either interrupts (Interrupt Mode), or independently from CPU
interaction using the HSCX’s 4-channel DMA interface (DMA Mode).
After RESET, the HSCX operates in Interrupt Mode, where data transfer must be done by the
CPU. The user selects the DMA Mode by setting the DMA bit in the XBCH register. Both
channels can be independently operated in either Interrupt or DMA Mode (e.g. Channel
A-DMA, Channel B-Interrupt).
3.3 Error Handling
Depending on the error type, erroneous frames are handled according table 1.
Table 1
Error Handling
Frame Type
I
S
Note: The station variables (V(S), V(R)) are not changed.
4
4.1 Register Set
The communication between the CPU and the HSCX is done via a set of directly accessible
8-bit registers. The CPU sets the operating modes, controls function sequences, and gets
status information by writing or reading these registers (Command/Status transfer). Complete
information concerning the register functions is provided in detailed register description. The
most important functions programmable via these registers are:
Each of two serial channels of HSCX is controlled via an equal, but totally independent register
file (channel A and channel B).
Semiconductor Group
CPU Interface
– setting of operating and clocking modes
– layer-2 functions
– data transfer modes (Interrupt, DMA)
– bus mode
– DPLL mode
– baudrate generator
– test loop
Error Type
CRC error
aborted
unexpec. N(S)
unexpec. N(R)
CRC error
aborted
unexpec. N(R)
with I-field
Generated
Response
–
–
S-frame
–
–
–
–
–
38
Generated
Interrupt
RME
RME
–
PCE
–
–
PCE
PCE
Rec. Status
CRC error
abort
–
–
–
SAB 82525
SAB 82526
SAF 82525
SAF 82526
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